Hello everyone,
My name is Jacob and I'm a new KDE forum user. I made the switch to KDE in end June and I am very satisfied so far. I want to thank the devs and the community for making this Desktop Environment and its applications available to anyone!
I've been following the latest applications announcements and I was planning to move to KDE Neon LTS User Edition with the next Ubuntu long-term release as its core. My question is if the team thinks it is possible that stable versions of KDE Falkon, KDE Kube and KDE Elisa will be released by then, or need these programs surely much more time than that?
I know it is not an easy question, but maybe some of the developers can tell what they think about the current state of these applications.

(I hope I posted the question in the right section!)

I will certainly be interested in the answers as well.

First suggestion: watch the blog posts around these. When they're ready they'll make the announcements, and they'll likely give updates as they get closer.

As for projections as far as I (mostly a bystander keeping a pretty loose eye on things) can tell:

Qupzilla being added to KDE and renamed to Falkon just happened in the last couple of months so expect some time for things to get fully transferred and established in the new infrastructure. I suppose it is plausible for Falkon to be included in the next KDE applications release considering they already had regular stable releases and the transfer process is mostly: copy the code, set the project up in KDE's infrastructure, cut release; but I wouldn't hold my breath. Of course you can always just download and use the latest stable release of Qupzilla for now. Don't expect any major differences between Qupzilla's last release and Falkon's first release as that first release should be mostly "First release under KDE infrastructure! (and linking KDE libraries)".

Kube looks like it's making steady progress. They just posted a blurb last week about collaborating with Kolab so they can focus on the single-account route. They may have something stable enough for the 4/2018 KDE applications release, but I suspect it may be later than that.

Elisa looks like it's also making steady progress. I've seen updates for that pop up periodically in the Visual Design Group forum and I'd expect they'll probably have more discussion there as they get that closer to releasing (though I'd still expect not by the next KDE applications release).

You should ask the developer of each of those programs, which are all part of the KDE community but have different histories and different level of readiness.

Just a note: it is not clear whether Falkon will be part of the bundle known as "KDE Applications" or will have its own release schedule. And in both cases, it does not mean that it will use Frameworks (right now it uses extra-cmake-modules only).

airdrik and tosky,
thank you for your answers! Your suggestion are very good! I will keep an eye on the progress!

airdrik: I hope we will see a stable release of Kube for the 4/18 release then I'll be very excited to use it as soon as it'll be ready!